import axios from "axios";
import {ElLoading, ElMessage, ElMessageBox, ElNotification} from "element-plus";
import {getToken} from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import {blobValidate, tansParams} from "@/utils/ruoyi";
import cache from "@/plugins/cache";
import {saveAs} from "file-saver";
import useUserStore from "@/store/modules/user";

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = {show: false};

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_API,
  // 超时
  timeout: 10000,
});

// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false;
  // 是否需要防止数据重复提交
  const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
  let dataPriv=localStorage.getItem('dataPriv')? localStorage.getItem('dataPriv'):'-1'
  config.headers["dataPriv"]=dataPriv
  if (getToken() && !isToken) {
    config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
  }
  // get请求映射params参数
  if (config.method === "get" && config.params) {
    let url = config.url + "?" + tansParams(config.params);
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  if (!isRepeatSubmit && (config.method === "post" || config.method === "put")) {
    const requestObj = {
      url: config.url,
      data: typeof config.data === "object" ? JSON.stringify(config.data) : config.data,
      time: new Date().getTime(),
    };
    const sessionObj = cache.session.getJSON("sessionObj");
    if (sessionObj === undefined || sessionObj === null || sessionObj === "") {
      cache.session.setJSON("sessionObj", requestObj);
    } else {
      const s_url = sessionObj.url;                // 请求地址
      const s_data = sessionObj.data;              // 请求数据
      const s_time = sessionObj.time;              // 请求时间
      const interval = 1000;                       // 间隔时间(ms)，小于此时间视为重复提交
      if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
        const message = "数据正在处理，请勿重复提交";
        console.warn(`[${s_url}]: ` + message);
        return Promise.reject(new Error(message));
      } else {
        cache.session.setJSON("sessionObj", requestObj);
      }
    }
  }
  return config;
}, error => {
  console.log(error);
  Promise.reject(error);
});

// 响应拦截器
service.interceptors.response.use(res => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"];
    // 二进制数据则直接返回
    if (res.request.responseType === "blob" || res.request.responseType === "arraybuffer") {
      return res.data;
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        ElMessageBox.confirm("登录状态已过期，您可以继续留在该页面，或者重新登录", "系统提示", {
            confirmButtonText: "重新登录",
            cancelButtonText: "取消",
            type: "warning",
          },
        ).then(() => {
          isRelogin.show = false;
          useUserStore().logOut().then(() => {
            location.href = "/index";
          });
        }).catch(() => {
          isRelogin.show = false;
        });
      }
      return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
    } else if (code === 500) {
      ElMessage({
        message: msg,
        type: "error",
      });
      return Promise.reject(new Error(msg));
    } else if (code !== 200) {
      ElNotification.error({
        title: msg,
      });
      return Promise.reject("error");
    } else {
      console.log("<<<=== 响应拦截器 状态码是200");
      return Promise.resolve(res.data);
    }
  },
  error => {
    console.log("err" + error);
    let {message} = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    ElMessage({
      message: message,
      type: "error",
      duration: 5 * 1000,
    });
    return Promise.reject(error);
  },
);

// 通用下载方法
export function download(url, params, filename) {
  downloadLoadingInstance = ElLoading.service({text: "正在下载数据，请稍候", background: "rgba(0, 0, 0, 0.7)"});
  return service.post(url, params, {
    transformRequest: [(params) => {
      return tansParams(params);
    }],
    headers: {"Content-Type": "application/x-www-form-urlencoded"},
    responseType: "blob",
  }).then(async (data) => {
    const isLogin = await blobValidate(data);
    if (isLogin) {
      const blob = new Blob([data]);
      saveAs(blob, filename);
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
      ElMessage.error(errMsg);
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    console.error(r);
    ElMessage.error("下载文件出现错误，请联系管理员！");
    downloadLoadingInstance.close();
  });
}

export default service;
